/Engine/Source/Editor/Kismet/Public/BlueprintEditor.h
Functions for handling the changing of the pin's type (PinCategory, PinSubCategory, etc)
[FEdGraphPinType](API\Runtime\Engine\EdGraph\FEdGraphPinType) OnGetPinType ( [UEdGraphPin](API\Runtime\Engine\EdGraph\UEdGraphPin) * SelectedPin ) const